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The City of Covington promotes 811 on new gas
markers.
The City of Covington decided it was time for a
change. And what a great change they made. Back in
March 2008, David Gray was updating their O & M
Manual. He started thinking that with the new one-call
logo and phone number in effect it was a great time to
update their gas warning markers
David created a hand drawing & presented his idea to
Jimmy Halsford at G&C Supply who, in turn, passed it
up to G&C's sign division.
In April, David had his sample. He made a few minor
changes and the picture shown is the result. The new
signs went into use in July 2008.
If your utility would like to share how they are
promoting 811, please send your information to Kathy
Quartermaine, at
kquarter@tnonecall.com.
Who knows, maybe the next newsletter will feature
your utility!
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Tennessee 811 offers free safety meetings at your
office or work site.
We don't restrict the hours - we can come to you
before your crews go out in the morning, during lunch
or when they come back in the afternoon. We work
around what works for you! We can tailor the time
frame of the presentation to suit your meeting needs
Call or email now and ask for Holly Austin or Scott
Holder and we will set you up.
Holly - haustin@tnonecall.com - 615-367-1110 (x7102) Scott - sholder@tnonecall.com - 615-367-1110 (x7140) "Call Before You Dig" is a great safety topic for any
meeting. Even your inside personnel can benefit.
Remember - there is no cost involved to you, and it's a
service we offer. The better educated your employees
are, the safer they will be.
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We thought it might be interesting to run a series
about how GPS works. The content for this series
comes directly from the Discovery channel's "How
Stuff Works" programs via their website. So, sit back
and enjoy the read.
Our ancestors had to go to pretty extreme measures
to keep from getting lost. They erected monumental
landmarks, laboriously drafted detailed maps and
learned to read the stars in the night sky.
Things are much, much easier today. For less than
$100, you can get a pocket-sized gadget that will tell
you exactly where you are on Earth at any moment. As
long as you have a GPS receiver and a clear view of
the sky, you'll never be lost again.
In this article, we'll find out how these handy guides
pull off this amazing trick. As we'll see, the Global
Positioning System is vast, expensive and involves a
lot of technical ingenuity, but the fundamental
concepts at work are quite simple and intuitive.
When people talk about "a GPS," they usually mean a
GPS receiver. The Global Positioning System (GPS) is
actually a constellation of 27 Earth-orbiting satellites
(24 in operation and three extras in case one fails).
The U.S. military developed and implemented this
satellite network as a military navigation system, but
soon opened it up to everybody else.
Each of these 3,000- to 4,000-pound solar-powered
satellites circles the globe at about 12,000 miles
(19,300 km), making two complete rotations every day.
The orbits are arranged so that at any time, anywhere
on Earth, there are at least four satellites "visible" in
the sky.
A GPS receiver's job is to locate four or more of these
satellites, figure out the distance to each, and use this
information to deduce its own location. This operation
is based on a simple mathematical principle called
trilateration. Trilateration in three-dimensional space
can be a little tricky, so we'll start with an explanation
of simple two-dimensional trilateration in the next
newsletter.
Brain, Marshall, and Tom Harris. "How GPS
Receivers Work." 25 September 2006.
HowStuffWorks.com.
Photo courtesy U.S. Department of Defense Artist's concept of the GPS satellite constellation |
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On April 2, 2009, Tennessee One Call will host its
Annual Meeting and 12th Annual Tennessee 811 Golf
Tournament.
As in past years, the meeting and tournament will be
held at Windtree Golf Course located in Mt. Juliet, TN.
The meeting will start at 9:00am and the golf
tournament will begin at noon.
Please follow the link for entry form and more detailed
information.
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Tennessee 811
email:
tnocs@tnonecall.com
phone:
(615) 367-1110
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